Improvement in machine for cutting hoops



. taited gratte air-1d i @with WILLIAM' H. DAVIS, 0F LXINGTON, INDIANf, ASSIGNOR T()A IIIMSELF AND JOSEPH HABLAN, OF SAME PLAGE.

Letters .Patent N l06,67l, dated Ang/ast 23, 1870.

TheSchedule referred to in these Letters Patent and making part cf the same.

I, WILLIAM H. Davis, of Lexington, in the county of Scott and State of Indiana, have invented certain Improvemeutsin Hoopmakiug Machines, of which the following is a specification.

The 'object of my invention is to rive-or split from the upper surface of suitable timber thin strips of wood, to be used for hoops. or other kindred purposes."

.The timber isv fed along` by a carriage, to which it is securely/attached 4hy means of clampjaws.

The device by which -the hoops Vare split o r cnt oli' contains the novel features' of my invention, and con sists of two knife-bearing arms, attached, 'hy their` lower and rearvends, to the sides of the main frame 'by pivotsgor other suitable articulated joints, so that the other or forwardV ends, which-carry the ki'life-stock,`

can raise or lower, as may he desired.

lhe knife-stock is pivoted between the said arms,

so that it can oscillate, and thus follow the curves formedby the grain of-the timber, and thus preserve an even thickness `in the hoop'.

The knife is irmly attached tov the under side of the vknife-stock, which is cut away immediately beneath the blade of said knife,so as to allow the hoop to pass through.

There is a metallic plate set in front of the knifeedge, which serves to gauge the thickness of the hoop.

lThe knife-bearing' arms are firmly tied together by two cross-'pieces or tics, one before and one behind the knife-stock. These ties are beveled, so' as to raise the knife-stock when the timber is starting under-if.'

The knife-bearing arms are jointed, or pivotedsutiicicntl-y low on thel .side frames to hold the knife-stock iirmly down to the bolt of timber from which the hoops arefbeing cut.

'lhe carriage moves-on rollers, l ]'ournaled in the main frame, and is provided ou the underside with a ruck, which meshes with a pinion on the drivingshaft.

Draw-ing; -Figure 1 is a plan of the machine.` Figure 2 is an end elevation of the same.

Figure Sis a longitudinal vertical sectionl of the ing iii grooves ill the carriage. These guides are not v necessarily requiredion a full-sized machine, as the' weight of the carriage is then generally-'sufiicientto hold itself down. v

E represents the main shaft, from which the motion is derived. .ihis shaft bears thc pinion.o,vwhich moves' the carriage back and forth, and to it any 'motive power may he applied. Suitable reversing gear may also he provided, if desired.

y G`G represent the knife-bearing arms, which are4 pivot-ed tothe main frame at c c, at which point they rest at the proper angle necessary to keep the knifestock down tothe timber. Between these arms, near the upper or forward end, is pivoted the knife-stock H, byv journals, in the said arms, said stock being provided with a suitable knife, e, for splitting oi the hoop. This knife is set so as to allow a hoop of the desired thickness to pass between it and thc stock to whichit is secured.

A metallic plate, g, is securcd'to the stock in. front of the knife-edge,A which rides upon the uppersurface of the timber, and determines the thickness of the hoop. This plate may be made adjustable, so that it can be raised'aud lowered at pleasure. A roller ma v he substituted' for this plate, if preferred.

A tie, I, behind the knife, secures the arms together at that point, and another, J, secures the ends.

' -The knife-stock and the block J vare provided with mortises 1i. h, (see-H153) which guide the strip cut otf in an oblique upward direction. v

Set-screws i i, in the lowerside of the tie I, impinge ag i-instthetop of the main frame, and prevent the knifc`from falling low enough to come in contact with the clamps on the carriage On the topot' the knife-stock is secured a lever, 7c, whichserves to keep the stock from oscillating t'oomuch, and, being provided with a handle at the rear end, the knife may be tilted s.; as to ru'n out ofthe timber, or, in other word s.cut oif-t-he hoop at any desired point bylifting the said handle.

Having thus described my invention,

I do not claim the main frame, nor the carriage and tsattachments; hut

4-What I do claim is- The knife-bearing arms G G and knife-stock H when constructed and 'arranged to operate in 'conjunction with eachother, substantially in the mannen shownfand for the purposes set forth.

fitness my hand this 11th day of July, 1870.

WILLIAM H. DAVIS.

Witnesses: i

. SAMUEL S. Gnown,

HENRY M. WILSON. 

